﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace prj.Contracts
{
    using System.ServiceModel;

    [ServiceContract(Namespace = "http://wwww.prj.com/")]
    public interface ICalculator
    {
        [OperationContract]
        double Add(double x, double y);

    }
}
